Synthesis of Molecular Motors Incorporatingpara-Phenylene-Conjugated or Bicyclo[2.2.2]octane-Insulated Electroactive Groups
作者:Guillaume Vives、Alexandre Gonzalez、Joël Jaud、Jean-Pierre Launay、Gwénaël Rapenne
DOI:10.1002/chem.200700223
日期:2007.6.25
potential molecular motors with one incorporating the insulating bicyclo[2.2.2]octane fragment. These molecules are based on a ruthenium complex bearing a tripodal stator functionalized to be anchored onto surfaces. The ferrocenyl electroactive groups and the cyclopentadienyl (Cp) rotor are connected through a p-phenylene spacer (5) or through a spacer incorporating an insulating bicyclo[2.2.2]octane moiety
理论上已通过比较1,4-双(二茂铁基)苯(1)和1,4-双(二茂铁基)中的电子偶联参数(V(ab))评估了双环[2.2.2]辛烷片段的绝缘作用双环[2.2.2]辛烷(2)。通过DFT优化几何形状,并通过二聚体分裂方法进行扩展的Huckel计算以评估V(ab)。计算结果表明,电子耦合从60 meV的1到5 meV的降低了12倍。第二部分描述了两个潜在的分子马达的合成,其中一个结合了绝缘的双环[2.2.2]辛烷片段。这些分子是基于钌配合物的,该配合物带有三脚架定子,其功能化后可以锚定在表面上。